Citrus specialized slow release fertilizer using biomass granular carbon as substrate and preparation method of citrus specialized slow release fertilizer
A biomass charcoal, biomass granule technology, applied in fertilizer mixtures, applications, fertilization devices, etc., can solve problems such as flight failure to land, affecting nutrient absorption, and being fixed by soil, and achieve the ability to adsorb and maintain nutrients and water. The effect of strong, high fertilizer nutrient utilization rate and simple production process
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[0078] Example 1: Preparation process of special slow-release fertilizer for citrus based on biomass granular carbon
[0079] Follow the steps below to mix in weight ratio or weight percentage:
[0080] (1) Take 46% nitrogen (N) large granular urea, 80 mesh biomass granular carbon particles, mix them in the ratio of 69.6%, 30.4%, and use a disc granulator (fertilizer with heating function). Commonly used machinery in the preparation process) for coating to produce elemental slow-release nitrogen fertilizer containing 32.02% nitrogen (N).
[0081] (2) Take diammonium phosphate powder with nitrogen (N) content of 18% and effective phosphorus (P2O5) content of 46%, 80 mesh biomass granular carbon particles and binder, at 73.1%, 20.9% Mix it with 6.0%, and use KP-300 type organic fertilizer granulator for pressure granulation to produce nitrogen and phosphorus compound fertilizer with 13.16% nitrogen (N) and 33.63% effective phosphorus (P2O5).
[0082] (3) Take calcium-magnesium phosp...
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